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3 years ago

Solve x + y = 5 using matrices. 2x – y = 1 I have the answer, x = 2 and y =3, how do I phrase this as a matrices? (2,3)?

1 answer:

7 0

X +y = 5

x = 5-y

---------------------

2x -y = 1

2•(5-y) -y = 1

10 -2y -y = 1

10 -3y = 1

-3 y = 1-10

-3y = -9

then you can divide it
y = -9/-3

y= 3

for x :

x + y = 5

x + (3) = 5
x= 5-3
x= 2

(x,y)

(2,3)

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2 years ago

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s2008m [1.1K]

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3 years ago

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omeli [17]

Answer:

Step-by-step explanation:

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2 years ago

Help as soon as possible

Ne4ueva [31]

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3 years ago

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Answer:

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Step-by-step explanation:

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See the like terms (4r > 16-8)

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Second Equation Explanation: Factor out 7.

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3 years ago